Touchscreen display device having a touchscreen push button



FIG. 1 is a top, front, right perspective view of a touchscreen display device having a touchscreen push button showing my new design;

FIG. 2 is a top, rear, right perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings show portions of the touchscreen display device having a touchscreen push button which form no part of the claimed design. 

CLAIM I claim, the ornamental design for a touchscreen display device having a touchscreen push button, as shown and described. 